| Profession | Designated Authority |
| ACTUARY | Institute of Actuaries |
| ACTUARY (Scotland) | Faculty of Actuaries |
| ADVOCATE (Scotland) | Faculty of Advocates |
| ANALYTICAL CHEMIST | The Royal Society of Chemistry |
| BARRISTER (England and Wales) | The General Council of the Bar for England and Wales |
| BARRISTER (Northern Ireland) | The Executive Council of the Inn of Court of Northern Ireland |
| MINE MANAGER | Mining Qualifications Board |
| MINE SURVEYOR | Mining Qualifications Board |
| NURSES ADMITTED TO:PART 3 (first level nurses trained in the nursing of persons suffering from mental illness; or PART 5 (first level nurses trained in the nursing of persons suffering from learning disabilities); or PART 8 (nurses trained in the nursing of sick children); or PART 13 (nurses qualified following a course of preparation in mental health nursing); or PART 14 (nurses qualified following a course of preparation in learning disabilities nursing); or PART 15 (nurses qualified following a course of preparation in children's nursing) OF THE REGISTER MAINTAINED BY THE UNITED KINGDOM CENTRAL COUNCIL FOR NURSING, MIDWIFERY AND HEALTH VISITING | United Kingdom Central Council for Nursing, Midwifery and Health Visiting |
| OPTOMETRIST (OPHTHALMIC OPTICIAN) | General Optical Council |
| PATENT AGENT | The Chartered Institute of Patent Agents |
| PATENT ATTORNEY | The Chartered Institute of Patent Agents |
| SCHOOL TEACHER IN ENGLAND AND WALES (in publicly regulated schools) | Secretary of State for Education and Employment |
| SCHOOL TEACHER IN NORTHERN IRELAND (in publicly regulated schools) | Department of Education for Northern Ireland |
| SCHOOL TEACHER IN SCOTLAND (in publicly regulated schools) | General Teaching Council for Scotland |
| SOLICITOR (England and Wales) | The Law Society |
| SOLICITOR (Northern Ireland) | The Law Society of Northern Ireland |
| SOLICITOR (Scotland) | The Law Society of Scotland |
| EMPLOYMENT IN THE NATIONAL HEALTH SERVICE IN THE FOLLOWING PROFESSIONS: |
| CHILD PSYCHOTHERAPIST | Association of Child Psychotherapists |
| CLINICAL PSYCHOLOGIST | The British Psychological Society |
| STATE REGISTERED PRACTICE IN THE FOLLOWING PROFESSIONS: | Relevant Board at the Council for Professions Supplementary to Medicine: |
| ARTS THERAPIST | The Arts Therapists Board |
| CHIROPODIST | The Chiropodists Board |
| CLINICAL SCIENTIST | The Clinical Scientists Board |
| DIETITIAN | The Dietitians Board |
| MEDICAL LABORATORY TECHNICIAN | The Medical Laboratory Technicians Board |
| OCCUPATIONAL THERAPIST | The Occupational Therapists Board |
| ORTHOPTIST | The Orthoptists Board |
| PHYSIOTHERAPIST | The Physiotherapists Board |
| PROSTHETIST AND ORTHOTIST | The Prosthetists and Orthotists Board |
| RADIOGRAPHER | The Radiographers Board |
| SPEECH AND LANGUAGE THERAPIST | The Speech and Language Therapists Board |
| Professional Title (where applicable) | Designatory Letters | Designated Authority |
| ACTUARY | FIA | Institute of Actuaries |
| ACTUARY (Scotland) | FFA | The Faculty of Actuaries |
| CHARTERED ACCOUNTANT | ACA | The Institute of Chartered Accountants in England and Wales |
| CHARTERED ACCOUNTANT | ACA | The Institute of Chartered Accountants in Ireland |
| CHARTERED ACCOUNTANT | CA | The Institute of Chartered Accountants of Scotland |
| CHARTERED CERTIFIED ACCOUNTANT | ACCA | The Association of Chartered Certified Accountants |
| CHARTERED BIOLOGIST | C.Biol MIBiol | The Institute of Biology |
| CHARTERED BUILDER | MCIOB | The Chartered Institute of Building |
| CHARTERED BUILDING SERVICES ENGINEER | MCIBSE | The Chartered Institution of Building Services Engineers |
| CHARTERED BUILDING SURVEYOR | ARICS | The Royal Institution of Chartered Surveyors |
| CHARTERED CHEMICAL ENGINEER | MIChemE | The Institution of Chemical Engineers |
| CHARTERED CHEMIST | C.Chem MRSC | The Royal Society of Chemistry |
| CHARTERED CIVIL ENGINEER | MICE | The Institution of Civil Engineers |
| CHARTERED COLOURIST | C.Col | The Society of Dyers and Colourists |
| CHARTERED ELECTRICAL ENGINEER | MIEE | The Institution of Electrical Engineers |
| CHARTERED ENERGY ENGINEER | MInstE | The Institute of Energy |
| CHARTERED ENGINEER | C.Eng | The Engineering Council |
| CHARTERED FORESTER | MICFor | The Institute of Chartered Foresters |
| CHARTERED GAS ENGINEER | MIGasE | The Institution of Gas Engineers |
| CHARTERED GEOLOGIST | C.Geol FGS | The Geological Society |
| CHARTERED INFORMATION SYSTEMS ENGINEER | MBCS | The British Computer Society |
| CHARTERED INFORMATION SYSTEMS PRACTITIONER | MBCS | The British Computer Society |
| CHARTERED INSURANCE PRACTITIONER (Broking) | ACII | The Chartered Insurance Institute |
| CHARTERED INSURER (Insurance Underwriting) | ACII | The Chartered Insurance Institute |
| CHARTERED LAND SURVEYOR | ARICS | The Royal Institution of Chartered Surveyors |
| CHARTERED LOSS ADJUSTER | ACILA | The Chartered Institute of Loss Adjusters |
| CHARTERED MANAGEMENT ACCOUNTANT | ACMA | The Chartered Institute of Management Accountants |
| CHARTERED MARINE ENGINEER | MIMarE | The Institute of Marine Engineers |
| CHARTERED MARKETER | MCIM | The Chartered Institute of Marketing |
| CHARTERED MEASUREMENT AND CONTROL TECHNOLOGIST | MInstMC | The Institute of Measurement and Control |
| CHARTERED MECHANICAL ENGINEER | MIMechE | Institution of Mechanical Engineers |
| CHARTERED MINERALS SURVEYOR | ARICS | The Royal Institution of Chartered Surveyors |
| CHARTERED MINING ENGINEER | MIMinE | The Institution of Mining Engineers |
| CHARTERED PSYCHOLOGIST | C.Psychol | The British Psychological Society |
| CHARTERED PHYSICIST | C.Phys MInstP | The Institute of Physics |
| CHARTERED PHYSIOTHERAPIST | MCSP | The Chartered Society of Physiotheraphy |
| CHARTERED QUANTITY SURVEYOR | ARICS | The Royal Institution of Chartered Surveyors |
| CHARTERED SECRETARY | ACIS | The Institute of Chartered Secretaries and Administrators |
| CHARTERED SHIPBROKER | MICS | The Institute of Chartered Shipbrokers |
| CHARTERED STRUCTURAL ENGINEER | MIStructE | The Institution of Structural Engineers |
| CHARTERED SURVEYOR | ARICS | The Royal Institution of Chartered Surveyors |
| CHARTERED TEXTILE TECHNOLOGIST | C.Text ATI | The Textile Institute |
| CHARTERED TOWN PLANNER | MRTPI | The Royal Town Planning Institute |
| CHARTERED VALUATION SURVEYOR | ARICS | The Royal Institution of Chartered Surveyors |
| INCORPORATED ENGINEER (REGISTERED AT FINAL STAGE IN THE PROFESSIONAL ENGINEER SECTION OF THE ENGINEERING COUNCIL REGISTER) | I.Eng | The Engineering Council |
| PUBLIC FINANCE ACCOUNTANT | | |
| CIPFA | The Chartered Institute of Public Finance and Accountancy | |
| FCIArb | The Chartered Institute of Arbitrators | |
| ACIB | The Chartered Institute of Bankers | |
| MCIEH | The Chartered Institute of Environmental Health | |
| AIB (Scot) | The Institute of Bankers in Scotland | |
| MIH | The Institute of Housing | |
| AFIMA | The Institute of Mathematics and its Applications | |
| MIMM | The Institution of Mining and Metallurgy | |
| MLI | The Landscape Institute | |
| ALA | The Library Association | |
| MRAeS | The Royal Aeronautical Society | |
| M.Hort (RHS) | The Royal Horticultural Society | |
| MRINA | The Royal Institution of Naval Architects" | |